package day04;
import java.util.Scanner;

public class ScannerDemo {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        System.out.println("请输入年龄");
        int age=scanner.nextInt();
        System.out.println(age);

    }
}
/**
 * package java.util
 * class Scanner{
 *     Scanner(InputStream s){
 *
 *     }
 *     int nextInt(){
 *
 *     }
 *     double nextDouble(){
 *
 *     }
 *
 * }
 *
 * import java.util.Scanner;
 * Scanner scanner=new Scanner(System.in);
 *int a= scanner.nextInt();
 * double b=scanner.nextDouble();
 *
 *
 */